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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'afcb7558ac79dcb0c106c93250afe0c0a33a2e8627ffc72114016e4eee6dcdca' 
  AND token = 'HV7z2Y7PBy5UOaymo71h27Q9Eh7SQWIpdmDE90orGms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}